node('docker') {

  stage 'Checkout'

    checkout scm

  stage 'Acquire util'

    sh 'mkdir -p tmp && mkdir -p bin'
    dir('tmp'){
      git([ url: "https://github.internet2.edu/docker/util.git",
          credentialsId: "jenkins-github-access-token" ])
      sh 'mv ./bin/* ../bin/.'
    }
    sh 'rm -rf tmp'

  stage 'Setting build context'

    def maintainer = maintainer()
    def imagename = imagename()
    def tag

    // Tag images created on master branch with 'latest'
    if(env.BRANCH_NAME == "master"){
      tag = "latest"
    }else{
      tag = env.BRANCH_NAME
    }

    if(!imagename){
      echo "You must define an imagename in common.bash"
      currentBuild.result = 'FAILURE'
      sh 'exit 1'
     }
     if(maintainer){
      echo "Building ${imagename}:${tag} for ${maintainer}"
     }
     
  stage 'Acquire conftree'

    sh 'mkdir -p root'
    dir('root'){
      git([ url: "https://github.internet2.edu/docker/shib-idp-conftree.git",
          branch: "test", credentialsId: "jenkins-github-access-token" ])
    }
    
  stage 'Build haproxy'
  
    try{
      dir('haproxy'){
        sh 'docker build --rm -t my/haproxy . > debug'
        sh 'rm debug'
      }
    } catch(error) {
      def error_details = readFile('haproxy/debug');
      def message = "BUILD ERROR: There was a problem building Shibboleth appliance haproxy image (${tag}). \n\n ${error_details}"
      sh "rm -f haproxy/debug"
      handleError(message, tag)
    }

  stage 'Build'
    try{
      sh 'bin/rebuild.sh &> debug'
    } catch(error) {
      def error_details = readFile('./debug');
      def message = "BUILD ERROR: There was a problem building Shibboleth appliance image (${tag}). \n\n ${error_details}"
      sh "rm -f ./debug"
      handleError(message, tag)
    }

  stage 'Compose'
    try{
      sh 'bin/compose.sh &> debug'
    } catch(error) {
      def error_details = readFile('./debug');
      def message = "BUILD ERROR: There was a problem composing Shibboleth appliance (${tag}). \n\n ${error_details}"
      sh "rm -f ./debug"
      handleError(message, tag)
    }

  stage 'Tests'

    try{
      sh 'bin/test.sh &> debug'
    } catch(error) {
      def error_details = readFile('./debug');
      def message = "BUILD ERROR: There was a problem testing Shibboleth appliance :${tag}. \n\n ${error_details}"
      sh "rm -f ./debug"
      handleError(message, tag)
    }

  stage 'Clean Up'

    cleanup(tag)

  stage 'Notify'

    slackSend color: 'good', message: "Shibboleth-appliance (${tag}) passes test battery"

}

def maintainer() {
  def matcher = readFile('common.bash') =~ 'maintainer="(.+)"'
  matcher ? matcher[0][1] : 'tier'
}

def imagename() {
  def matcher = readFile('common.bash') =~ 'imagename="(.+)"'
  matcher ? matcher[0][1] : null
}

def handleError(String message, String tag, Boolean doCleanup = true){
  echo "${message}"
  currentBuild.setResult("FAILED")
  slackSend color: 'danger', message: "${message}"
  //step([$class: 'Mailer', notifyEveryUnstableBuild: true, recipients: 'chris.bynum@levvel.io', sendToIndividuals: true])
  if (doCleanup) {
    cleanup(tag)
  }
  sh 'exit 1'
}

def cleanup(String tag) {
    try{
      sh 'bin/decompose.sh &> debug'
      sh 'docker rm haproxy'
      sh 'docker rmi my/haproxy'
      sh 'bin/prune.sh &> debug'
    } catch(error) {
      def error_details = readFile('./debug');
      def message = "BUILD ERROR: There was a problem cleaning up Shibboleth appliance :${tag}. \n\n ${error_details}"
      sh "rm -f ./debug"
      handleError(message, tag, false)
    }
}